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v (N0 ModeL) J- H- RIDDLEl SHAFT G0UPL1NG- No. 252,700. Paten-@ed Jan. 24,1882.

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UNITED STAT-as JOHN H. RIDDLE, OF AKRON,

PATENT Trier-.

OHIO, AssIGNOR TOOONaAD-G. AUBLE, OF sAME PLACE.

SHAFT-COUPLING.

SPECIFICATION forming part of Letters Patent No. 252,700, dated January 24, 1,882. Application filed November 2S, 1881. (No model.)

T 0 all u-/lom it may concern Be it known that I, JOI-1N H. RIDDLE, of Akron, in the county ot' Summit and State of Ohio, have invented a new and uset'ul Improvement in Shaft-Couplings, of which lthe following is a specilicalion.

The object of my invention is to produce a shaft-coupling which shall be simple in construction, easily applied and removed, and which shall rigidly resist a longitudinal as well as a twisting strain. I attain these objects by devices illustrated in the accompanying drawings, in which- Figure 1 .represents the several parts of a coupling separated, the parts at the left of the center ot the sheet being shown in section and those at the right in elevation; Fig. 2, a centrai cross-section ot' the sleeve B and key O; andfFig, the coupling closed, uniting the two shafts. i

Similar' letters refer to similar parts throughout the several views.

The ends ofthe shafts A A being turned to the same size, akey-seat, c, is cut in each, near thcendthereof. Thesekey-seatsmaybemilled circular, in the form shown, or may be wedgeshaped and straight on the bottom, the essential feature being that their least depth shall be at or near the end of the shaft. Upon the ends ot' the shafts thus prepared slides a sleeve, B. This sleeveis constructed in one piece,and bored to accurately tit the shafts, and pierced in its thicker portion with a keyway, b. The

key C is adapted to tit the key-seats in the shafts and the keyway in the sleeve B. Surrounding the sleeve B isa case, D D, made in two pieces, and adapted by a screwthread, as shown in Fig. 1, or bolts, as shown inFigS, to be connected and inclose the sleeve B and key C and hold the latter in place. No especial form ot' construction is required for the ease D D', it being essential only that it should surround theA sleeve B, so as to hold the key C in place.

By this device either shaft may be removed without disturbing the-sleeve B by simply removing the case D D and withdrawing the key O.

Having thus described my claim- A shaft-coupling consisting essentially of wedge-shaped key-seats ator near the ends of the shafts, the leastdepth being near said ends, a sleeve constructed in .one piece to receive invention, I

said shaft ends and provided with a keyway,. 

